With the development of the times, aluminum profiles are more widely used, which makes us need to master polishing skills to prevent oxidation and fading of aluminum profiles besides using aluminum profiles. With the development of various means of transportation, such as airplanes, ships, automobiles and even household products, aluminum casings are used in office furniture, which can be said to be widely used in many fields and closely related to people's lives. However, every year, many industrial aluminum profiles are oxidized and lose their luster. At this time, we need to polish them to restore their former luster. General polishing is divided into three forms, namely polishing, mechanical polishing and electropolishing. In the process of polishing cars or ships, we should grasp the order, first carry out mechanical polishing, and then carry out electric polishing, so as to achieve bright and restore the past luster, and we can also color the aluminum profile shell.

According to different use requirements, the following are several methods to treat the surface of aluminum profile shell:

1. Anodizing, that is, removing the alumina on the aluminum profile shell, and effectively polishing.

2, electrolytic polishing, electrolytic polishing in the use of chemical reaction with electrolytic polishing as the anode and insoluble metal as the cathode, immersed in an electrolytic cell, energized with direct current to dissolve the anodic alumina, and the alumina disappeared from the aluminum profile shell to restore luster.

3. Chemical polishing can be used as the pretreatment process of protective decorative electroplating, and can also be used as the pretreatment process of chemical film formation such as phosphating bluing. If the antirust passivation solution is dipped before painting, the aluminum oxide on the surface of aluminum profile shell can be eliminated.

4. Dye the color after anodic oxidation of electrolytic reaction, form various colors on the oxide film, and then color it, which depends on your requirements.

Various corrosion forms of industrial aluminum profiles include hole corrosion.

The development of industrial aluminum profiles is expected. For modern exhibition industry, metal products have become a part of life and an indispensable part of industrial production. We will also have some problems when processing industrial aluminum profiles in Wuxi. The following small series will give you a brief introduction on what corrosion phenomena will occur when processing industrial aluminum profiles, so that you can have a certain understanding of what corrosion phenomena will occur when processing industrial aluminum profiles. Today, we will mainly introduce some phenomena that corrode industrial aluminum profiles.

1. Hole corrosion is a kind of local corrosion form that produces needle-point, point and hole on metal. An article made of aluminum and other alloying elements. Usually, it is made by processing it into castings, forgings, foils, plates, belts, tubes, bars and profiles, and then cold bending, sawing, drilling, assembling and coloring. The main metal element is aluminum, and some alloying elements are added to improve the performance of aluminum.

2. Galvanic corrosion: Galvanic corrosion is also a characteristic corrosion form of aluminum. The natural potential of aluminum is very negative. When aluminum is in contact with other Metal, aluminum is always at the anode to accelerate its corrosion.

3. crevice corrosion: crevice corrosion is accelerated due to the action of differential inflatable batteries, but it has no effect outside the crevice.

4. Intergranular corrosion: Intergranular corrosion means that pure aluminum does not flourish, and the cause of intergranular corrosion is related to improper heat treatment. Alloying elements or intermetallic compounds precipitate along grain boundaries, which constitutes a corrosive battery as opposed to grains, causing accelerated intergranular corrosion.

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